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Top Forums Shell Programming and Scripting Convert Epoch Time to Standard Date and Time & Vice Versa Post 302257341 by DrivesMeCrazy on Wednesday 12th of November 2008 01:09:15 AM
Originally Posted by Yogesh Sawant
works for me:
[yogeshs@helptoldreal-lr yogeshs]$ perl -e 'use Time::Local; print timelocal(0,25,1,11,11,2008), "\n";'
[yogeshs@helptoldreal-lr yogeshs]$ perl -e 'print scalar(localtime(1228938900)), "\n"'
Thu Dec 11 01:25:00 2008
[yogeshs@helptoldreal-lr yogeshs]$

can you post a similar example where the epoch value you got is incorrect?
Hi Yogesh,

Thanks for the reply.

I found out that the month parameter for perl timelocal() need to "- 1".
As in Jan to specify "0", Dec to specify 11.
I got the value wrong, thats why epoch is not returning a consistent value.

bash-3.00# perl -e 'print scalar(localtime(1226426701)), "\n"'
Wed Nov 12 02:05:01 2008
bash-3.00# perl -e 'use Time::Local; print timelocal(1,5,2,12,10,2008), "\n"'

Really appreciate your help
Test Your Knowledge in Computers #776
Difficulty: Medium
The Fourier transform (FT) decomposes a function of time (a signal) into its constituent frequencies.
True or False?

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gettimeofday(2) 						System Calls Manual						   gettimeofday(2)

gettimeofday - get the date and time SYNOPSIS
The function obtains the current time, expressed as seconds and microseconds since Epoch, and stores it in the structure pointed to by tp. The resolution of the system clock is one microsecond. PARAMETERS
Programs should use this time zone information only in the absence of the environment variable. tp A pointer to a structure in which the current time is returned. The structure includes the following members: tzp If this parameter is not a null pointer, it is interpreted as a pointer to a structure under HP-UX. The structure has the following fields: tz_minuteswest The number of minutes that the local time zone is west of Coordinated Universal Time (UTC) or Epoch. tz_dsttime A flag that, if nonzero, indicates that Daylight Savings Time (DST) applies locally during the appropriate part of the year. RETURN VALUE
returns the following values under HP-UX: Successful completion. Failure. is set to indicate the error. ERRORS
If fails, is set to the following value under HP-UX: [EFAULT] An argument address referenced invalid memory. EXAMPLES
The following HP-UX example calls twice. It then computes the lapsed time between the calls in seconds and microseconds and stores the result in a timeval structure: WARNINGS
Relying on a granularity of one microsecond may result in code that is not portable to other platforms. AUTHOR
was developed by the University of California, Berkeley, and HP. SEE ALSO
date(1), ftime(2), settimeofda(2), stime(2), time(2), ctime(3C). gettimeofday(2)

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